所谓交换技术，就是为了解决内存不足的问题，令作业在内存和（）之间交换。
参考答案：外存
Would you please keep silent? The news that the milk contains a harmful chemical _________and I want to listen.
A．has been broadcast
B．is being broadcast
C．is broadcast
D．is broadcasting
将金融市场分为发行市场和流通市场是按（）划分。
A.交易程序
B.地域范围
C.交易中介
D.交易标的物
